No, Dan, you do NOT have all the numbers on your side. Agreed, you can
calculate the amount of water in a saturated sample, but you cannot do the
simple calculations unless you factor in how many airchanges you get inside
of vented tanks in any given amount of time. I doubt sincerely that you can
even estimate, no less calculate, this factor.

Although if you can get me a government contract to study the issue, I'll be
happy to consider doing the consulting work {;-)

Jim



"Dan Luke" wrote in message
...

"RST Engineering" wrote:

(a) You can go through the math all day long and still not explain why I
have drained the (hangared) 182 after a particularly humid day or two and
get a tablespoon or two of water in the quick drains.

I see: math is false and your charming story is proof. Very convincing. I
have one too: I've been keeping a 172RG with 62-gal. capacity tanks
outdoors in one of the most humid places in the U. S. for six years. I
never top the tanks unless I specifically need to for the next flight.
Only once in that time have I ever had water in a sample, and that was due
to a bad fuel cap gasket.